Malicious PDF — malware analysis report

Static analysis result for SHA-256 d9ee51405615378b…

MALICIOUS

PDF

38.6 KB Created: 2020-08-09 13:08:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 576ee328ec272534fe59121936d65b15 SHA-1: d73d6c67f9f704b718186ca890e455aed360d5d3 SHA-256: d9ee51405615378bbc29a963cd554e21ad731612c6a7289288e5be506c686c0e
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.com/pify?keyword=nand+and+nor+gates+pdf'. This indicates the document's primary purpose is to redirect users to a malicious site, likely for phishing or malware delivery. The presence of numerous other PDF links, many hosted on Shopify, suggests a link farm or SEO poisoning tactic to increase visibility. No scripts were extracted, and the document body is largely unreadable binary data, but the malicious redirector is a strong indicator of malicious intent.

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.com/pify?keyword=nand+and+nor+gates+pdf
    • http://files.uncommonpracticesweboffice.com/uploads/1/3/1/4/131453917/280b1.pdf
    • http://files.carriecharleybrown.com/uploads/1/3/1/4/131407148/9913925.pdf
    • http://files.mrselizabethroberts.com/uploads/1/3/0/7/130740592/78cb90.pdf
    • http://files.kyleskamp.org/uploads/1/3/0/7/130776266/zavikimujoku.pdf
    • https://cdn.shopify.com/s/files/1/0431/1692/0994/files/kejejipixukutogovuvo.pdf
    • https://cdn.shopify.com/s/files/1/0429/9699/0105/files/68423707238.pdf
    • https://cdn.shopify.com/s/files/1/0430/9575/2864/files/batim.pdf
    • https://cdn.shopify.com/s/files/1/0438/8962/3208/files/wuwulonezumasolusupurito.pdf
    • https://cdn.shopify.com/s/files/1/0429/8155/6375/files/rixogopexutuserep.pdf
    • https://cdn.shopify.com/s/files/1/0428/9078/9020/files/sifutezaragulemutin.pdf
    • https://cdn.shopify.com/s/files/1/0431/4185/7448/files/pure_culture_techniques_microbiology.pdf
    • https://cdn.shopify.com/s/files/1/0434/6108/3301/files/44358405566.pdf
    • https://cdn.shopify.com/s/files/1/0431/1908/3677/files/53583269170.pdf
    • https://cdn.shopify.com/s/files/1/0429/8348/9690/files/fofadoj.pdf
    • https://cdn.shopify.com/s/files/1/0431/7321/6412/files/diwanizediwatigikaxigu.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005880.bin
78d7e3051f0b36722b3e88ca08bb5a6be21ec01dd39a81aab251d36d86380fff		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5880 5144 bytes
font_01_sfnt_off00006a19.bin
2ad102c54a1b5096945a8566d5f3bd92035e07d3dcd4d40e20efe47de2c9dedd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A19 10764 bytes

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